JPS6337356A - Self-adhesive paper for copying - Google Patents

Abstract

PURPOSE:To prevent the contamination of a photosensitive drum by forming a radiation-polymerized layer having a specific glass transition temp. on the end face of self-adhesive paper for copying. CONSTITUTION:The self-adhesive paper 1 for copying is formed by laminating top paper 2 and release paper 3 in such a manner that the self-adhesive agent layer 4 provided on the bottom surface of the top paper and the release surface of the release paper 3 contact each other and providing the radiation- polymerized layer cured by radiation projection to at least one end face of the self-adhesive paper 1. The radiation-polymerized layer 5 is formed by coating a radiation polymerizable compsn. on the end face of the self-adhesive paper 1 and projecting the radiation thereto to cure the compsn. The radiation polymerizable compsn. used for forming the radiation-polymerized layer 5 contains (a) a radiation polymerizable prepolymer and a radiation polymerizable monomer having radiation polymerizable carbon-carbon double bonds. The radiation polymerizable compsn. may contain (c) an acrylate compd. of (d) polymn. initiator in addition to (a), (b).

Description

TECHNICAL FIELD OF THE INVENTION The present invention relates to an adhesive paper for copying, and more particularly to an adhesive paper for copying that prevents photosensitive drums from being contaminated by colloidal substances.

Technical aspects of the invention and its problems An adhesive paper for copying is formed by laminating a top paper and a release paper in such a way that the adhesive layer provided on the lower surface of the top paper and the release surface of the release paper are in contact with each other. After the copy is made on the surface of the upper paper, the release paper is peeled off and used by pasting it at a desired location.

By the way, in the adhesive paper for copying having the structure described above, the adhesive layer provided on the lower surface of the top paper is conventionally
Adhesives such as acrylic and rubber were used. However, the adhesive paper for copying made using this kind of adhesive is
When it comes into contact with the photoconductor drum of a copying machine during copying, the adhesive protruding from the edge of the adhesive copy paper comes into contact with the drum.
Pl! Therefore, there was a problem in that the photosensitive drum of the copying machine was contaminated by the adhesive. Additionally, adhesive copy paper is heated when toner is fixed, but if the adhesive has poor heat resistance, the adhesive may protrude from the edge of the adhesive copy paper, and this may cause the fixing device to Another problem was that it was contaminated by the adhesive.

In order to solve such problems, for example,
-159874 discloses that a paint layer is provided on the end surface of the adhesive paper to prevent exposure of the adhesive.
A micro-adhesive paper for copying has been proposed, and the coating layer includes fiber-based derivative paints such as nitrocellulose and acedylcellulose, thermosetting 11 acrylic resin, and phenol small luminaldehyde resin. 01 solvent-based synthetic resin coatings or water-based synthetic resin coatings such as It M vinyl and styrene bucdiene are used.

However, with the adhesive paper for copying disclosed in Juki Special Publication No. 159874/1980, the coating applied to the edge of the paper permeates the top paper, the adhesive layer, and the release paper. However, there was a problem in that the surface of the adhesive paper for copying was not inspected sufficiently and the adhesive sometimes oozed out. In addition, the coating 1 applied to the edge of the adhesive paper
Since it is hardened by heating, there was a problem that the top paper and release paper would curl due to the heat.

On the other hand, although it is not a copy term, in order to prevent the adhesive from protruding from the edge of the adhesive tape used for car winding, the edge of the adhesive tape is coated with optical sensitizer. A car wrap tape made by applying an organic solvent containing a photoactive cross-linking agent and a vinyl polymer compound and irradiating it with light was published in 1975.
-10353g publication. However, when trying to apply this technology to adhesive paper for copying, (j) Since several solvents are used, this organic solvent soaks into the top paper of the adhesive paper or the release paper, causing the top paper, There were problems in that the release paper curled and environmental pollution caused by the iF3 solvent occurred.

In addition, if radiation polymerization/11 compounds such as Evogishi series are irradiated with radiation to form a QJ linear base layer on the end surface of adhesive paper for copying, when this adhesive paper for copying is brought into contact with a photoreceptor drum of In addition, when the copper wire layer is pressed against the photoreceptor drum, it may crack and fall off, and the photoreceptor drum may be contaminated by this fallen polymerization. discovered by those.

The inventors of the present invention conducted extensive research to solve the above-mentioned problems all at once, and found that the above-mentioned problems could be solved at once by using a specific radiation-combining compound without using any solvents. This discovery led to the completion of the present invention.

Purpose of the Invention The present invention is intended to solve the problems associated with the prior art as described above, and since the adhesive does not protrude from the edge of the adhesive paper for copying, it is possible for one copying person to use photosensitive paper. The body drum etc. will not be contaminated by adhesive,
Moreover, it is an object of the present invention to provide an adhesive paper for copying that does not cause curling due to organic solvent seeping into the top paper or release paper.

Invention! I! ! Key Point: Adhesive paper for copying according to the present invention (1) A top paper and a release paper are laminated in such a way that the adhesive layer provided on the lower surface of the top paper and the release surface of the release paper are in contact with each other. In the adhesive paper for copying, a radiation layer N is provided on the end surface of the adhesive paper for copying, and this polymerization layer has a radiation carrier and a tJ.
It is formed by applying a radiation-polymerizable composition containing compound A but not containing a solvent to the end surface of adhesive paper for copying, and then curing it by irradiation with irradiation and irradiation.
It is characterized by having a glass transition temperature of 00°C.

The adhesive paper for copying according to the present invention has a linear composition coated on at least one end surface thereof,
A radiation polymerized layer is provided that is cured according to the 1JIi rule, and this polymerization has a quality of 5 (glass transition between 5 and 200 degrees Celsius). This prevents the adhesive from oozing out and prevents the adhesive layer from cracking and falling off, thereby preventing the photosensitive drum of the copying machine from being contaminated by the adhesive. Moreover, since the radiation-polymerizable composition does not contain organic solvents or water, there is no need to dry the top paper and release paper of the adhesive paper, and the top paper and release paper do not get wet and curl. On top of that/1! Since the curing of the U composition is not done by heating but by irradiation with radiation, the adhesive paper for copying is not heated to high temperatures, and from this point of view as well, the top paper and release paper do not curl.

Hereinafter, the adhesive paper for copying according to the present invention will be specifically explained.

As shown in FIG. 1, the adhesive paper 1 for beer according to the present invention has a top paper 2 and a release paper 3, a sticky agent layer 4 provided on the lower surface of the paper, and a release paper 3. ; at least one of the adhesive sheets for copying 1
On one end surface, a hardened wire bonding layer 5 is cut by δ.

The straight line polymerizable material 5 is formed by applying a radiation-polymerizable composition to the end surface of the adhesive paper 1 for beer, and then curing the composition by irradiating it with radiation.

The radiation polymerizable composition used to form the radial polymerization layer 5 includes (a) radial polymerization layer 5, and (b) radial polymerization layer 5.
) Contains a linearly polymerizable heptad polymer having a radiation polymerizable carbon-carbon dicar bond in the molecule. Furthermore, in addition to the above (a) and (b), this radiation polymerizable composition also has (C)
Contains an acrylate compound or (d) polymerization initiator/V
But that's fine.

Used in radiation-incompatible compositions ( a > 1JI
Specifically, the iQ'J line polymerizable prepolymer is ■
Examples include urethane acrylate oligomers, which are made by combining a polyol compound such as a polyester type or polyether type, or a low molecular weight alkyd, silicone resin, or epoxy resin with a polyvalent isocyanate compound such as 2,4-tolylene diisocyanate. 2,6-tolylene diisocyanate, 1
, 3-xylylene diisocyanate, 1,4-xylylene diisocyanate, diphenylmethane 4,4-diisocyanate, etc. to add hydroxyl groups to the isocyaner 1 to urethane prepolymer. (Meth)acrylates such as 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxybrobyl acrylate, 2-hydroxypropyl methacrylate-1, polynibrene gelicol acrylate, polynibrene gelicol methacrylate, etc. This urethane acrylate oligomer has at least one carbon-carbon double bond.

The molecular weight of such urethane acrylate oligomer is 500 to 10,000, preferably 1,000 to 5,000.
000 culm degree is desirable.

In some cases, a mixed prepolymer formed by mixing a urethane acrylate oligomer with an epoxy acrylate, polynisdel acrylate, silicone acrylate, etc. may also be used as the prepolymer. .

It is made by adding epoxy acrylate or the like to such urethane acrylate sesame or urethane acrylate oligomer (aH + 100% polyester prepolymer rule line 1) 90 to 30 ff in one composition.
Preferably, it is used in an amount of 1%.

(b) 7 in the molecule used in the radiation polymerizable composition;
1) As the radially polymerizable septamer having a secant linearly polymerizable carbon-carbon double bond, a compound having at least two or more radiation-polymerizable carbon-carbon double bonds is preferable, and specifically, trimedylolpropane triacrylate, detramedylolmethanetetraacrylate, pen oligoerythritol triacrylate, pentaerythritol detraacrylate, dipenta]nyristhritol monohydroxypentaacrylate, dipentaerythritol hexaacrylate or 1,4 -butylene glycol diacrylate-1., 1,6-hexane diΔ-diacrylate-1., polyethylene glycol diacrylate,
Examples include commercially available oligoester acrylates.

Also, radiation polymerizable carbon-carbon double bonds are removed (b)
As the radiation-polymerizable monomer, it is also possible to use a compound having one carbon-carbon diagonal bond such as N-vinyl-2-pyrrolidone.

This kind of (b) dare! It is preferable that the JJ line polymerizable hexamer is used in an amount of 10 to 70% by weight in the anomalous line polymerizable composition.

Ili radiation polymerized bamboo silk composition, as above (a) l
j' linear polymerization 'i'-L prepolymer and (b)
b! In addition to the lI and lJ line polymerizable heptamers, (
C) Acrylate compounds can also be used in combination.

Such (C) acrylate compounds include 2-
It can be done by using Ebul l\21 nidyl acrylate, nonylphenoxybolyethylene glycol acrylate, polyethylene glycol diacrylate, 2-hydroxyconidel acrylate, and the like. (C) By using an acrylate compound in the composition capable of polymerizing the b'i QJ line, the glass transition temperature of the 1q b'i QJ line polymerization layer becomes 50 to 150°C and becomes flexible [1 is f']. This prevents the QJ ray polymer layer 5 from cracking and falling off when it is pressed against the photosensitive drum for copying according to the present invention.

When such (b) radiation vehicle chassis monomer and (C) acrylate compound are used (jf), these components (b) and (C) are combined at δ1 to form h'i copper wire lane type composition. It is preferable that the acrylate compound (C) is used in an amount of 10 to 70% by weight in the composition, and it is preferable that the acrylate compound (C) is used in an amount of 20 to 60% by weight in the composition.

Further, in the present invention, (d) a polymerization initiator is used in the radiation polymerizable composition. As such a polymerization initiator, a radical generation type undercarriage initiator or an ionic polymerization type initiator can be used.

Specifically, the radical-generating polymerization initiator includes 2,
2-diethoxyacetophenone, benzophenone, 4,
4-bisdimethylaminobenzophenone, benzyl, dibenzoyl, benzoin methyl ether, penzyl dimethyl tar, 1-hydroni dicyclohexylphenyl quatone 4f, benzophenone type, benzoin needle type, acetophenone type compounds, azo compounds, etc. can be used.

In addition, specific examples of Ionsenkin-type polymerization initiators include:
Acids, alkali metals, metal alkyls, etc. can be used.

Such (d>polymerization initiators are preferably used in the radiation polymerizable composition in an amount of 1 to 10 kinetic P (J).

In general, in the present invention, a sensitizer ((e)) may be used in the radiation-polymerizable composition (if necessary).

Such (e) sensitizers include triethylamine,
Amines such as diethylamine ethyl methacrylate-1 to triethylenetetramine, urea compounds, ∆ compounds, nitrile compounds, phosphorus compounds, chlorine compounds, etc. are used.

Such (e) sensitizer is included in the radiation polymerizable composition,
It is preferable to use it with a suspension of O.~10ffiW%.

Furthermore, in the present invention, a (f) stabilizer may be used in the ray-ray type composite 111 phase composition as necessary. Examples of such (f) stabilizer include 11th-class ammonium chloride, Hydro:1-one, diethylhydroxyamine, henzodiazole, hydroquinone 7-methyl ether, and the like can be used.

Such (f) stabilizer may be present in the radiation polymerizable composition;
It is preferable to use it in a range of 0 to 2%.

In the present invention, a radiation-polymerizable composition containing each of the above-mentioned components is coated on the edge surface of adhesive copy paper, and then cured by irradiation with radiation to form a waste line on the edge surface of adhesive copy paper. This secant line type composite layer has a glass transition temperature of 50 to 200°C, preferably 70 to 150°C, more preferably 80 to 130°C. If the glass transition temperature of the polymerizable IJ'i copper wire exceeds 200°C, the 6i standard wire will crack and fall off when adhesive paper for copying is fed into the copying machine and pressed against the photoreceptor drum. I don't like it for some reason. -h If the glass transition temperature is less than 50°C, when adhesive copy paper is laminated, a blocking phenomenon may occur on the end surface, and /JIi The effect of preventing the adhesive from extruding by the copper wire mismatching layer may be lost. Undesirable.

In order to keep the glass transition temperature of the gold-plated copper wire layer within the above range,
Preferably, as described above, (C
) By including an acrylate compound, (a) 1. It is produced by selecting a urethane (urethane) relay 1-based oligomer, etc. as a 1-1 prepolymer.

Next, a method for producing paper according to the present invention will be explained.

1M12 and release paper 3 are laminated so that the adhesive layer 4 provided on the lower surface of the upper paper and the release surface of release paper 3 are in contact with each other, and then at least one end surface of the in-laid laminate is laminated. Then, apply a polygonal polymer composition containing /υ as described in (a) above.

Applying the late QJ line car chassis composition to the end face of the laminate (for 1i, when the adhesive paper for copying is in roll form, apply the composition to the end face by brushing, spraying method, silk method, screen method, etc.) It is also possible to use the '4 VtiM or J5 in the sheet cut line and apply the roll of copying terminology shield paper continuously to the edge surface before covering the sheet cut.

Also, IJk on the end face! JJ line lane type composition is coated bδ
Applying a smoothing operation to the edge of the Ji'-+ '4 paper for copying, which is brought into contact with felt or sponge containing the Ji'-+ '4 line polymerizable composition, can smooth the edges of the adhesive copy paper. This is preferable because it allows the radiation-containing composition to be uniformly applied to the surface.

Next, ultraviolet (UV) or electron beam (EB) light is applied to the end surface of this adhesive paper for copying, and (a) the radiation-type polymerizable prepolymer and polymer (b) contained in the radiation-polymerizable composition are
) It is sufficient to convert the polycrystalline polymerizable hexamer into Φ gold sand.

Effects of the Invention The adhesive paper for copying according to the present invention is provided with a radiation-type gold layer on at least one end surface, which is coated with a split line polymerizable composition made of specific components and cured by hIIQJ ray irradiation. Since this IJll line polymerization layer has a specific glass transition temperature, the adhesive will protrude from the edge of the adhesive copy paper, and the lineage polymerization layer will fall by υ1 and fB2. This prevents the photosensitive drum of the copying machine from being contaminated by the adhesive. Furthermore, since the radiation-type synthetic composition does not contain solvents or water, there is no need to dry the top paper and release paper of the adhesive paper, and the top paper and release paper do not get wet and curl. Since the curing of the 10-odd q/1-line bonding composition is not done by heating but by 04-line irradiation, the adhesive paper for copying is not heated to high temperatures. The hair does not curl.

EXAMPLES The present invention will be explained below with reference to Examples, but the present invention is not limited to these Examples.

Example 1 Φ prefecture average molecular weight (polystyrene equivalent) 4.000 1 Talethane acrylate type A ligomer-40
60 parts by weight of oligoester acrylate, 20 parts by weight of N-vinyl-2-pyrrolidone, and 6 parts of benzyl dimedyl guetal were mixed to form a radial composite composition. After preparing a product and applying it to the edge surface of a copy paper made of a top paper and a release paper laminated via an acrylic adhesive, the nine sides are brought into pressure contact with a felt to perform a smoothing operation. Next, this end surface was illuminated with an AOOW high-pressure mercury lamp from a distance of 3 cm for about 1 second to produce a copying adhesive paper with a line polymer layer formed on the end surface.

The glass transition temperature of the parabolic chassis layer thus formed was 150°C.

Copies were made using this adhesive paper for copying, and the adhesive properties, curling properties, running properties, side illumination [1], and the presence or absence of contamination of the photosensitive drum by the adhesive were examined. The running performance, image quality, and contamination of the photosensitive drum due to adhesive were investigated using 200 sheets of adhesive copy paper.The presence or absence of contamination of the photosensitive drum was determined by the presence or absence of black spots appearing on the copy paper. show.

The results are shown in Table 1 and Table 2.

Example 2 Urethane acrylate oligomer 100 with a weight average molecular weight (polystyrene conversion) of 3.800
Tunkushibe and trimethylolpropane triacrylate 1
A copper wire chassis composition was prepared by mixing 0 tmfa part and 1 single part of benzyl dimethyl ketal.

Using this radiation-sensitive composition, adhesive paper for copying was produced in the same manner as in Example 1, and the properties of the adhesive paper for copying were investigated in the same manner as in Example 1.

The results are shown in Tables 1 and 2.

Comparative Example 1 Various types of 1' and 'i 44 were examined by copying according to the copy feel in the same manner as in Example 1, except that the opening linear sign was not formed on the edge of the adhesive paper for copying.

The results are shown in Tables 1 and 2.

From Example 1, Example 2, and Comparative Example 1, it was found that the edge surface of the copy terminology shield paper had a specific glass transition quality.
It can be seen that contamination of the photoreceptor drum can be prevented by forming the iJ linear composite layer.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a copy term shield according to the present invention. 1...Adhesive paper for copying 2...Top Paper 3...Peel off
Release paper 4...Adhesive layer 5...Hll river line composite layer agent Patent attorney Shun Meiki - Department No. 1

Claims (1)

[Claims] 1) An adhesive paper for copying in which a top paper and a release paper are laminated in such a way that the adhesive layer provided on the lower surface of the top paper and the release surface of the release paper are in contact with each other. On the edge of the adhesive paper,
A radiation polymerized layer is provided, the radiation polymerized layer is
It is formed by applying a radiation-polymerizable composition containing a radiation-polymerizable compound but not containing a solvent to the end surface of adhesive paper for copying, and then curing it by irradiation with radiation.
An adhesive paper for copying characterized by having a glass transition temperature of ~200°C or less. 2) Claim 1, wherein the radiation-polymerizable composition comprises (a) a radiation-polymerizable prepolymer and (b) a radiation-polymerizable monomer having a radiation-polymerizable carbon-carbon double bond in the molecule. Adhesive paper for copying as described in section. 3) The adhesive paper for copying according to claim 2, wherein the radioactively polymerizable prepolymer is (a-1) a urethane acrylate oligomer. 4) The adhesive paper for copying according to claim 2, wherein the radiation-polymerizable prepolymer comprises (a-1) a urethane acrylate oligomer and (a-2) polyester acrylate, epoxy acrylate, or silicone acrylate. 5) The radiation-polymerizable monomer having a radiation-polymerizable carbon-carbon double bond in the molecule includes trimethylolpropane triacrylate, tetramethylolmethanetetraacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol monohydroxypenta The adhesive paper for copying according to claim 2, which is acrylate, dipentaerythritol hexaacrylate, 1,4-butylene glycol diacrylate, 1,6-hexanediol diacrylate, polyethylene glycol diacrylate or oligoester acrylate. . 6) The copying product according to claim 1, wherein the radiation-polymerizable composition comprises (a) a radiation-polymerizable prepolymer, (b) the radiation-polymerizable monomer, and (c) an acrylate compound. adhesive paper. 7) The adhesive paper for copying according to claim 6, wherein the acrylate compound (c) is 2-ethylhexyl acrylate, nonylphenoxypolyethylene glycol acrylate, polyethylene glycol diacrylate, or 2-hydroxyethyl acrylate. 8) The adhesive paper for copying according to claim 1, wherein the radiation-polymerizable composition comprises (a) a radiation-polymerizable prepolymer, (b) the radiation-polymerizable monomer, and (d) a polymerization initiator. . 9) Claim 1, wherein the radiation-polymerizable composition comprises (a) a radiation-polymerizable prepolymer, (b) the radiation-polymerizable monomer, (c) an acrylate compound, and (d) a polymerization initiator. Adhesive paper for copying as described in . 10) (d) The polymerization initiator is 2,2-diethoxyacetophenone, benzophenone, 4,4-bisdimethylaminobenzophenone, dibenzoyl, benzoin methyl ether, benzyl dimethyl ketal, 1-hydroxycyclohexylphenyl ketone or an azo compound. An adhesive paper for copying according to claim 8 or 9. 11) The adhesive paper for copying according to claim 1, wherein the radiation polymerized layer has a glass transition temperature of 70 to 150°C. 12) The adhesive paper for copying according to claim 1, wherein the radiation polymerized layer has a glass transition temperature of 80 to 130°C.